Brendan Gleeson stars as Martin Cahill, the leading Irish criminal of the 1980s. A protean figure, Cahill was a man of extraordinary intelligence, obsessive secretiveness, and vicious brutality who was never stopped by the Irish police despite having pocketed more than $60 million of other people's money. He was also capable of generosity to those in need and exuded a contagious joie de vivre that made him a hero to Ireland's poor and working-class population. Born into poverty...